Positioning pin semi-automatic pressing tool

Abstract

This utility model relates to a pressing tool, specifically a semi-automatic pressing tool for positioning pins; it includes a pressing part and a support part located below it, a suction part is provided between the pressing part and the support part, and a positioning part is also provided on one side of the support part; the pressing part includes a driving device and a pressing head, the pressing head can reciprocate along the Z direction; the suction part includes a suction cup, the suction cup adsorbs the positioning pin; the positioning part is used for angular positioning of the workpiece to be installed, so that the pin hole is coaxial with the positioning pin; the support part is used to support the workpiece to be installed; the semi-automatic pressing tool for positioning pins using this solution has the advantages of high assembly efficiency, low labor consumption, and stable product assembly.

Description

Technical Field

[0001] This utility model relates to a pressing tool, specifically a semi-automatic pressing tool with a positioning pin. Background Technology

[0002] During the installation of worm gears, locating pins play a crucial role in mechanical assembly, ensuring the positional stability and accuracy of the worm gear during installation.

[0003] In the existing technology, the lateral locating pin on the outer circle of the worm gear relies on manual labor to place the worm gear on a V-block and hammer the locating pin into the pin hole. This assembly method is inefficient, time-consuming, and labor-intensive. Because it is hammered in manually, the interference fit between the locating pin and the pin hole is small, which makes the locating pin easy to fall off in the later stages of use. After the locating pin is hammered in, the worm gear needs to be flipped over and the pin hole needs to be manually riveted to prevent it from falling off. This not only increases the number of steps but also results in poor performance due to limited manpower. Utility Model Content

[0004] This utility model aims to provide a semi-automatic pressing tool for positioning pins. It improves assembly efficiency, reduces labor costs, ensures product assembly stability, and guarantees the positional stability of the worm gear during installation.

[0005] The semi-automatic positioning pin pressing tool in this solution includes a pressing part and a support part located below it. A suction part is provided between the pressing part and the support part, and a positioning part is also provided on one side of the support part. The pressing part includes a driving device and a pressing head, which can reciprocate along the Z direction. The suction part includes a suction cup, which adsorbs the positioning pin. The positioning part is used for angular positioning of the workpiece to be installed, so that the pin hole is coaxial with the positioning pin. The support part is used to support the workpiece to be installed.

[0006] The advantages of this utility model are: 1) It effectively improves assembly efficiency; operators only need to easily insert the worm gear, increasing press-fit efficiency by 5 times. 2) The positioning pins do not require manual alignment; this application uses a suction cup to automatically adsorb the positioning pins. 3) Because the driving device pressure is adjustable, different pin hole fit interference amounts can be designed as needed. 4) Increasing the pin hole fit interference amount effectively prevents the positioning pins from falling off during later use. 5) Due to the increased interference amount between the hole and the positioning pin, there is no need to rivet both ends of the pin hole, reducing installation steps.

[0007] Furthermore, the suction unit also includes a slider and a reset component that can reset the slider; the slider can reciprocate along the X direction, and the suction cup is located at the front end of the slider; the slider is provided with an inclined guide surface, and the pressure head can abut against the inclined guide surface during movement. When the pressure head moves down to the inclined guide surface of the slider, one end of the cylindrical pin has already entered the pin hole; as the pressure head continues to move down, the slider retracts under the action of the inclined guide surface, preventing interference with the pressing part.

[0008] Furthermore, the suction cup is provided with a groove that matches the side of the positioning pin. This groove can position the positioning pin and prevent it from rotating; at the same time, it increases the contact area, making the positioning pin more stably attached to the suction cup.

[0009] Furthermore, a limiting part is provided on the other side of the support part. The limiting part is provided with a limiting groove adapted to the workpiece to be installed, and the workpiece to be installed is placed into the limiting groove for limiting.

[0010] Furthermore, the support includes at least two supports, one of which has a side surface as a positioning surface to position the workpiece in the X direction; the support is L-shaped to position the workpiece in the Y and Z directions.

[0011] Furthermore, the limiting part and the positioning part are fixedly connected to different supports.

[0012] Furthermore, it also includes an adjustable limiter for limiting the stroke range of the pressure head.

[0013] Furthermore, the positioning part is provided with a positioning port. The workpiece to be installed is inserted into the positioning port for angular positioning of the workpiece. Attached Figure Description

[0014] Figure 1 This is a front view of the semi-automatic positioning pin pressing tool of this utility model;

[0015] Figure 2 This is a perspective view of the semi-automatic positioning pin pressing tool of this utility model;

[0016] Figure 3 This is a structural diagram of the semi-automatic positioning pin pressing tool of this utility model;

[0017] Figure 4 This is a partial schematic diagram of the semi-automatic positioning pin pressing tool of this utility model;

[0018] Figure 5 This is a schematic diagram of the suction part of the semi-automatic positioning pin pressing tool of this utility model;

[0019] Figure 6 This is a schematic diagram illustrating the use of the semi-automatic positioning pin pressing tool of this utility model;

[0020] Figure 7 This is a schematic diagram showing the pressure head and slider abutting each other during the use of the semi-automatic positioning pin pressing tool of this utility model;

[0021] Figure 8 This is a schematic diagram of the positioning pin pressing process in use of the semi-automatic positioning pin pressing tool of this utility model.

[0022] In the diagram, 1 is the pressing part, 1-1 is the pressing head, 1-2 is the adjustable limiter, 1-3 is the pressing rod, 1-4 is the bracket, 2 is the support part, 2-1 is the first support, 2-2 is the second support, 2-3 is the positioning surface, 3 is the suction part, 3-1 is the suction cup, 3-2 is the groove, 3-3 is the slider, 3-4 is the inclined guide surface, 3-5 is the slide block, 3-6 is the reset part, 3-7 is the vacuum generator, 4 is the positioning part, 4-1 is the positioning port, 5 is the limiting part, 5-1 is the limiting groove, 6 is the base, 7 is the positioning pin, 8 is the worm gear, 8-1 is the flat square end, and 8-2 is the pin hole. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] In this embodiment, the workpiece to be installed is a worm gear, according to... Figures 1 to 4 As shown, the semi-automatic positioning pin pressing tool includes a pressing part 11 and a support part 2 bolted to the base 6. The support part 2 is located below the pressing part 11, and a suction part 3 is provided between the pressing part 11 and the support part 2.

[0025] The pressing unit 11 includes a pressing rod 1-3 mounted on a bracket 1-4 and an adjustable limiter 1-2. A return spring is fitted onto the pressing rod 1-3. The lower end of the pressing rod 1-3 passes through the bracket 1-4 and is bolted to a pressing head 1-1. Driven by a drive device, the pressing rod 1-3 drives the pressing head 1-1 to move along the Z-direction. The drive device is preferably a hydraulic press. The adjustable limiter 1-2 is used to limit the stroke range of the pressing head 1-1.

[0026] The support 2 includes at least two supports for supporting the worm gear 8 (the number of supports can be set according to the length of the workpiece to be installed). In this embodiment, there are two supports, preferably L-shaped. Of the two supports, the first support 2-1 is located near the lower part of the pressure head 1-1, and the second support 2-2 is located away from the pressure head 1-1. The supports suspend the worm gear 8 above the base 6 at the position where the pin hole 8-2 is located. One side of the first support 2-1 is a positioning surface 2-3, and the positioning boss of the worm gear 8 abuts against the positioning surface 2-3; the other side is fixed with a screw to a limiting part 5, which has a limiting groove 5-1 adapted to the worm gear 8. The second support 2-2 is bolted to a positioning part 4, which has a positioning opening 4-1 for fixing the placement angle of the worm gear 8, so that the pin hole 8-2 on the worm gear 8 is coaxial with the positioning pin 7. Specifically, in this embodiment, one end of the worm gear 8 is provided with a pin hole 8-2, and the other end is a flat square end 8-1. The positioning port 4-1 is a U-shaped port adapted to the flat square end 8-1.

[0027] like Figure 5As shown, the suction unit 3 includes a slider 3-3, a slide block 3-5, and a reset member 3-6 that can reset the slider 3-3. The reset member 3-6 is preferably a tension spring. The slide block 3-5 is bolted to a support. The slider 3-3 can reciprocate along the X direction. The slider 3-3 has an inclined guide surface 3-4. When the pressure head 1-1 moves to abut against the inclined guide surface 3-4, it forces the slider 3-3 to move backward, preventing interference between the pressure head 1-1 and the slider 3-3. Preferably, the sidewalls of the pressure rod 1-3 and the pressure head 1-1 near the slider 3-3 are flat, and this flat surface is parallel to the front end face of the slider 3-3. As the pressure head 1-1 continues to descend, the front end face of the slider 3-3 remains in sliding contact with this flat surface. The front end of the slider 3-3 is provided with a suction cup 3-1 for adsorbing and fixing the positioning pin 7. Preferably, this suction cup 3-1 is a vacuum suction cup. The suction cup 3-1 has a groove 3-2 that matches the side of the positioning pin 7. Specifically, since the positioning pin 7 is a cylinder, the groove 3-2 is an arc-shaped groove. The positioning pin 7 is attracted and fixed to the suction cup 3-1 by the vacuum generator 3-7.

[0028] The pressing process is as follows:

[0029] Step 1: Insert the flat square end 8-1 of the worm gear 8 into the positioning port 4-1, abutting the side wall of the worm gear 8 against the support, while simultaneously abutting the positioning boss of the worm gear 8 against the positioning surface 2-3 of the first support 2-1, thus quickly positioning the worm gear 8. Figure 1 As shown, at this time, the axis of the pin hole 8-2 of the worm 8 is set along the Z direction, that is, it is located in the vertical direction;

[0030] Step 2: Place the positioning pin 7 into the groove 3-2 of the suction cup 3-1, as follows: Figure 2 As shown, the vacuum generator 3-7 creates negative pressure on the suction cup 3-1 and holds the positioning pin 7 in place so that it does not fall off;

[0031] Step 3: Operate the hydraulic press to push the pressure rod 1-3 downwards to push the pressure head 1-1, as shown. Figure 6 As shown, when the pressure head 1-1 contacts the positioning pin 7, as the pressure head 1-1 moves downward, it presses the lower end of the positioning pin 7 into the pin hole 8-2 (the suction force of the suction cup 3-1 on the positioning pin 7 is negligible). When the pressure head 1-1 continues to move downward until it contacts the inclined guide surface 3-4 of the slider 3-3, as... Figure 7 As shown, slider 3-3 is forced to retract while suction cup 3-1 disengages from positioning pin 7; simultaneously, the planes of pressure rod 1-3 and pressure head 1-1 slide along the front end face of suction cup 3-1. Thus, when pressure rod 1-3 continues to move downwards, it will not interfere with suction cup 3-1. Figure 8 As shown;

[0032] Step 4: When the upper end of the pressure rod 1-3 is on the same plane as the upper end of the adjustable limiter 1-2, the positioning pin 7 is pressed into the required depth, the hydraulic press returns, and the pressure rod 1-3 automatically returns to its original position under the action of the return spring. At the same time, the slider 3-3 automatically returns to its original position under the action of the tension spring, so that the groove 3-2 of the suction cup 3-1 and the pin hole 8-2 of the worm gear 8 remain coaxial.

[0033] Step 5: Remove worm gear 8 and repeat the above steps.

[0034] In this application, the worm gear and locating pin can be picked up and placed manually or by a robotic arm. This application is also applicable to the installation of locating pins on various workpieces.

[0035] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model, without affecting the effectiveness of the implementation of this utility model and the practicality of the patent.

Claims

1. A semi-automatic press-fit tool for a dowel pin, characterized in that: The device includes a pressing part and a support part located below it. A suction part is provided between the pressing part and the support part, and a positioning part is also provided on one side of the support part. The pressing part includes a driving device and a pressing head, which can reciprocate along the Z direction. The suction part includes a suction cup, which adsorbs the positioning pin. The positioning part is used for angular positioning of the workpiece to be installed, so that the pin hole is coaxial with the positioning pin. The support part is used to support the workpiece to be installed.

2. The dowel pin semi-automatic press-fit tool of claim 1, wherein: The suction unit also includes a slider and a reset component that can reset the slider; the slider can reciprocate along the X direction, and the suction cup is located at the front end of the slider; the slider is provided with an inclined guide surface, and the pressure head can abut against the inclined guide surface during the movement of the slider.

3. The dowel pin semi-automatic press-fit tool of claim 2, wherein: The suction cup has a groove that matches the side of the positioning pin.

4. The dowel pin semi-automatic press-fit tool of claim 1, wherein: The other side of the support is also provided with a limiting part, which has a limiting groove adapted to the workpiece being installed.

5. The dowel pin semi-automatic press-fit tool of claim 4, wherein: The support includes at least two supports, one of which has a side surface for positioning; the support is L-shaped.

6. The dowel pin semi-automatic press-fit tool of claim 5, wherein: The limiting part and the positioning part are fixedly connected to different supports.

7. The dowel pin semi-automatic press-fit tool of claim 1, wherein: It also includes an adjustable limiter for limiting the stroke range of the pressure head.

8. The dowel pin semi-automatic press-fit tool of claim 1, wherein: The positioning part is provided with a positioning port.

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